Remove deprecated WebFrameClient methods, part 1/2.
Remove deprecated WebFrameClient methods, part 1/2.

BUG=361761
TEST=everything stays green

Review URL: https://codereview.chromium.org/249973003

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@172412 bbb929c8-8fbe-4397-9dbb-9b2b20218538

primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs